WO2018217725A4 - Hub and rotor assembly - Google Patents

Hub and rotor assembly Download PDF

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Publication number
WO2018217725A4
WO2018217725A4 PCT/US2018/033858 US2018033858W WO2018217725A4 WO 2018217725 A4 WO2018217725 A4 WO 2018217725A4 US 2018033858 W US2018033858 W US 2018033858W WO 2018217725 A4 WO2018217725 A4 WO 2018217725A4
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
hub
segment
disc
disc brake
Prior art date
Application number
PCT/US2018/033858
Other languages
French (fr)
Other versions
WO2018217725A2 (en
WO2018217725A3 (en
Inventor
Jeffrey R. Wittlinger
Jay D. White
Jason Andler
Keith M. ERNENWEIN
Matthew P. Karich
Jeffrey S. Morris
Sri Satya Teja Kakarla
Chiran Shamser JBR
Original Assignee
Hendrickson Usa, L.L.C.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hendrickson Usa, L.L.C. filed Critical Hendrickson Usa, L.L.C.
Priority to BR112019024699-1A priority Critical patent/BR112019024699B1/en
Priority to AU2018272826A priority patent/AU2018272826B2/en
Priority to CA3061977A priority patent/CA3061977C/en
Publication of WO2018217725A2 publication Critical patent/WO2018217725A2/en
Publication of WO2018217725A3 publication Critical patent/WO2018217725A3/en
Publication of WO2018217725A4 publication Critical patent/WO2018217725A4/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/123—Discs; Drums for disc brakes comprising an annular disc secured to a hub member; Discs characterised by means for mounting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/001—Hubs with roller-bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/02—Hubs adapted to be rotatably arranged on axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T5/00—Vehicle modifications to facilitate cooling of brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/0043—Brake maintenance and assembly, tools therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/128—Discs; Drums for disc brakes characterised by means for cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0016—Brake calipers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/007—Pins holding the braking members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • F16D2065/1328—Structure internal cavities, e.g. cooling channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/134—Connection
    • F16D2065/1384—Connection to wheel hub
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/134—Connection
    • F16D2065/1392—Connection elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2250/00—Manufacturing; Assembly
    • F16D2250/0084—Assembly or disassembly

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Abstract

A disc brake rotor and hub assembly for a heavy-duty vehicle. The disc brake rotor and hub assembly includes a hub portion (304). The hub portion is receivable on, and rotatable about, an axle spindle (302) of a heavy-duty vehicle. A rotor portion (306) includes a disc segment, a mounting segment and a cylindrical sleeve segment connecting the disc segment to the mounting segment. A flange portion (308) connects with the rotor portion and separately with the hub portion. Optionally, the rotor portion connects directly to the hub portion. The rotor portion is removable without removing the hub portion.

Claims

70 AMENDED CLAIMS received by the International Bureau on 6 December 2018 (06.12.2018)
[Claim 1] A disc brake rotor and hub assembly (100, 300) for a heavy-duty
vehicle, the disc brake rotor and hub assembly comprising:
a hub portion (102, 304), the hub portion receivable on and rotatable about an axle spindle (101, 302) of a heavy-duty vehicle;
a rotor portion (104, 306), the rotor portion including a disc segment (140, 340), a mounting segment (142, 342) and a substantially cylindrical sleeve segment (144, 344) connecting the disc segment and the mounting segment;
a flange portion (106, 308) connectable with the rotor portion (104) and separately with the hub portion (102, 304); and
wherein a smallest inner dimension (D2, E-ID) of the rotor portion (104, 306) is greater than a largest outer dimension (Dl, D6) of the hub portion (102, 304) to facilitate removal of the rotor portion without removing the hub portion from the axle spindle (101, 302).
[Claim 2] The disc brake rotor and hub assembly (100, 300) of claim 1 wherein the rotor portion (104, 306) and hub portion (102, 304) being without contact with one another.
3. The disc brake rotor and hub assembly (100, 300) of claim 1 further including structure (120, 124, 322, 326) within the hub portion (102, 304) for receiving a pair of same size bearings (122, 126, 324, 328) to support the hub portion for rotation about the axle spindle (101, 302).
4. The disc brake rotor and hub assembly (100, 300) of claim 3 wherein a wheel mounting segment (142, 342) of the rotor portion (104, 306) is attached to the flange portion (106) at an axial location between the pair of same size bearings (122, 126, 324, 328).
5. The disc brake rotor and hub assembly (100, 300) of claim 3 further including a fill port opening (128, 320) at an axial location on the hub portion (102, 304) located between the structure (120, 124, 322, 326) within the hub portion for receiving a pair of same size bearings (122, 126,324, 328) so as to be accessible without removing the flange portion (106, 308).
6. The disc brake rotor and hub assembly (100, 300) of claim 5 wherein the fill port opening (128, 320) is formed by flow drilling.
7. The disc brake rotor and hub assembly (300) of claim 5 further including a fill port plug (321) receivable within the fill port opening (320), the fill port plug extending radially from a body (310) of the hub 71 portion (304) a radial distance (R8) less than a radial distance (R7) that a support area (318) of the hub portion extends from the body, whereby the flange portion (308) may be removed from the hub portion without interference by the fill port plug.
8. The disc brake rotor and hub assembly (100, 300) of claim 1 further including wheel pilots (180, 384) integrally formed on the flange portion (106, 308), each of the wheel pilots being cantilevered from the flange portion and includes a radially extending reinforcement structure (182, 386).
9. The disc brake rotor and hub assembly (100, 300) of claim 1 further including a flange mounting section (112, 312) on the hub portion (102, 304), the flange portion (106, 308) being mounted at an outboard axial location to the flange mounting section on the hub portion.
10. The disc brake rotor and hub assembly (100, 300) of claim 1 further including a plurality of wheel studs (152, 352) extending through openings (150, 350) in the mounting segment of the rotor portion (104, 306) and through openings (154, 354) in the flange portion (106, 308).
11. The disc brake rotor and hub assembly (100) of claim 10 further including each of the wheel studs (152) having a knurl portion (151) extending through and engaging surfaces of the openings (150) in the mounting segment (142) of the rotor portion (104) and the openings (154) in the flange portion (106), wherein the diameter (D150) of the openings in the mounting segment of the rotor portion is greater than the diameter (D154) of the openings in the flange portion.
12. The disc brake rotor and hub assembly (100) of claim 1 further including threaded structure in an interior surface (130) at an end portion of the hub portion (102) for receiving a hubcap (131) with a threaded exterior surface.
13. The disc brake rotor and hub assembly (100, 300) of claim 1 further including a surface defining an annular relief (114, 314) in an outer surface of the hub portion (102, 304) at an axial location between a support area (118, 318) for the flange portion (106, 308) and a flange mounting section (112, 312) of the hub portion.
14. The disc brake rotor and hub assembly (100, 300) of claim 1 further including circumferentially spaced surfaces defining scallops (158, 358) in the mounting segment (142, 342) of the rotor portion (104, 306) for cooling fluid to flow through.
15. The disc brake rotor and hub assembly (100, 300) of claim 1 further 72 including circumferentially spaced surfaces defining scallops in the attachment section (174, 374) of the flange portion (106, 308) for cooling fluid to flow through.
16. The disc brake rotor and hub assembly (100, 300) of claim 1 wherein the smallest inner dimension (D2, E-ID) of the rotor portion (104, 306) being greater than a largest outer dimension (Dl, D6) of the hub portion (102, 304) enables removal of the hub portion from the axle spindle (101, 302) without removing the rotor portion.
17. A disc brake rotor and hub assembly (100, 300) for a heavy-duty vehicle, the disc brake rotor and hub assembly comprising:
a hub portion (102, 304), the hub portion receivable on and rotatable about an axle spindle (101, 302) of a heavy-duty vehicle;
a rotor portion (104, 306), the rotor portion including a disc segment (140, 340), a mounting segment (142, 342) and a substantially cylindrical sleeve segment (144, 344) connecting the disc segment and the mounting segment;
a flange portion (106, 308) connectable with the rotor portion (104, 306) and separately connectable with the hub portion (102, 304), whereby the rotor portion and hub portion are free of contact with each other; and
wherein heat from the disc segment (140, 340) of the rotor portion (104, 306) is conducted from the disc segment, to the sleeve segment (144, 344), to the mounting segment (142, 342), to the flange portion (106, 308) and then to the hub portion (102, 304).
18. The disc brake rotor and hub assembly (100, 300) of claim 17 further including an inboard disc (160, 360) and an outboard disc (162, 362) formed in the disc segment (140, 340) of the rotor portion (104, 306) and spaced apart and interconnected by a plurality of pins (164, 364), and further including surface means defining a passage (166, 368) formed at an interface of the outboard disc (162, 362) and sleeve segment (144, 344) of the rotor portion, wherein heat from the outboard disc is conducted through the pins to the inboard disc and then to the sleeve segment of the rotor portion.
19. The disc brake rotor and hub assembly (100, 300) of claim 17 further including circumferentially spaced surfaces defining scallops (158, 358) in the mounting segment (142, 342) of the rotor portion (104, 306) for cooling fluid to flow through.
20. The disc brake rotor and hub assembly (100, 300) of claim 17 73 further including circumferentially spaced surfaces defining scallops in the attachment section (174, 374) of the flange portion (106, 308) for cooling fluid to flow through.
21. The disc brake rotor and hub assembly (100) of claim 17 further including threaded structure in an interior surface (130) at an end portion of the hub portion (102) for receiving a hubcap (131) with a threaded exterior surface.
22. The disc brake rotor and hub assembly (100, 300) of claim 17 wherein a smallest inner dimension (D2, E-ID) of the rotor portion (104, 306) is greater than a largest outer dimension (Dl, D6) of the hub portion (102, 304) to facilitate removal of the rotor portion without removing the hub portion from the axle spindle (101, 302).
23. The disc brake rotor and hub assembly (100, 300) of claim 17 further including an inboard disc and an inboard disc (160, 360) and an outboard disc (162, 362) formed in the disc segment (140, 340) of the rotor portion (104, 306) and spaced apart and interconnected by a plurality of pins (164, 364) defining radially extending passages (165, 366), and further including surface means defining an axially extending passage (166, 368) formed at an interface of the outboard disc (162, 362) and sleeve segment (144, 344) of the rotor portion, wherein fluid may flow from the axially extending passage to the radially extending passages.
24. A disc brake rotor and hub assembly (200) for a heavy-duty vehicle having an axle spindle, the disc brake rotor and hub assembly comprising:
a hub portion (202), the hub portion receivable on and rotatable about the axle spindle, the hub portion having a substantially cylindrical body (210) and a mounting section (212) extending radially outward from the body;
a rotor portion (204) connectable with the hub portion (202), the rotor portion including a disc segment (240), a substantially cylindrical sleeve segment (244) and a mounting segment (242) extending radially inward from the sleeve segment, the sleeve segment connecting the disc segment and the mounting segment; and
the mounting segment (242) of the rotor portion (204) attachable with the mounting section (212) of the hub portion (202) at a location axially outboard of the mounting section of the hub portion; and
wherein the rotor portion (204) is removable without removing the hub portion (202) from the axle spindle.
25. The disc brake rotor and hub assembly (200) of claim 24 further including a flange portion connectable with the rotor portion (204) and separately connectable with the hub portion (202) so the rotor portion and hub portion do not contact each other.
26. The disc brake rotor and hub assembly (200) of claim 25 further including a plurality of circumferentially spaced surfaces defining scallops in the mounting segment (242) of the rotor portion (204) for cooling fluid to flow through.
27. The disc brake rotor and hub assembly of claim 24 wherein the smallest inner dimension (D4) of the sleeve segment (244) of the rotor portion (204) is greater than the largest outer dimension (D5) of the hub portion (202) to facilitate removal of the hub portion without disconnecting the rotor portion.
28. The disc brake rotor and hub assembly of claim 24 further including an inboard disc (260) and an outboard disc (262) formed in the disc segment (240) of the rotor portion (204) and spaced apart and interconnected by a plurality of pins (264) defining radially extending passages (265), and further including surface means defining an axially extending passage (266) formed at an interface of the outboard disc and sleeve segment (244) of the rotor portion, wherein fluid may flow from the axially extending passage to the radially extending passages, and wherein the axially extending passage also reduces stress at the interface of the outboard disc and sleeve segment of the rotor portion.
29. A disc brake rotor and hub assembly (300) for a heavy-duty vehicle having an axle spindle (302) with a bearing receiving surface (392) of a first outer diameter (H), the disc brake rotor and hub assembly comprising:
a hub portion (304), the hub portion adapted to be received on and rotatable about the axle spindle (302), the hub portion having surfaces defining a pair of bearing receiving bores (322, 326), each one of the bearing receiving bores being located adjacent axially opposite ends of the hub portion, and a substantially cylindrical body (310) extending between the surfaces defining the bearing receiving bores; and a rotor portion (306) connectable with the hub portion (304), the rotor portion including a disc segment (340), a mounting segment (342) and a substantially cylindrical sleeve segment (344) connecting the disc segment to the mounting segment, wherein an end portion of the cylindrical sleeve segment is attached to the disc segment;
wherein a smallest inner dimension (E-ID) of the cylindrical sleeve segment (344) of the rotor portion (306) is greater than a largest outer dimension (D6) of the hub portion (304) to facilitate removal of the rotor portion without removing the hub portion from the axle spindle (302).
30. The disc brake rotor and hub assembly (300) of claim 29 further including the body of the hub portion having a second outer diameter (C) and wherein a ratio of the second outer diameter to the first outer diameter (H) of the bearing receiving surface (392) is in a range from about 1.50 to about 1.64.
31. The disc brake rotor and hub assembly (300) of claim 29 further including the sleeve segment (344) of the rotor portion (306) having a third outer diameter (E-OD), wherein a ratio of the third outer diameter to the first outer diameter (H) of the bearing receiving surface (392) is in a range from about 2.4 to about 2.7.
32. The disc brake rotor and hub assembly (300) of claim 29 wherein a ratio of the smallest inner dimension (E-ID) of the sleeve segment (344) of the rotor portion (306) to the first outer diameter (H) of the bearing receiving surface (392) is in a range from about 2.15 to about 2.55.
33. The disc brake rotor and hub assembly (300) of claim 29 wherein the disc segment (340) of the rotor portion (306) having a fifth outer diameter (F), wherein a ratio of the fifth outer diameter to the first outer diameter (H) of the bearing receiving surface (392) is in a range from about 4.35 to about 4.90.
34. The disc brake rotor and hub assembly (300) of claim 29 wherein the mounting segment of the rotor portion having a plurality of circum- ferentially spaced openings arranged on a sixth diameter (S), wherein a ratio of the sixth diameter to the first outer diameter (C) of the body (310) is in a range from about 1.92 to about 2.10.
35. The disc brake rotor and hub assembly (300) of claim 29 wherein the disc segment of the rotor portion having a fifth outer diameter (F), wherein a ratio of the fifth outer diameter to a thickness (Q) of the sleeve segment (344) of the rotor portion (306) may in the range from about 31.0 to about 68.5.
36. The disc brake rotor and hub assembly (300) of claim 29 further including a wheel mounting flange portion (308) wherein the rotor 76 portion (306) being connectable only to the wheel mounting flange portion.
37. The disc brake rotor and hub assembly (300) of claim 29 further including a wheel mounting flange portion (308) wherein the hub portion (304) being connectable only to the wheel mounting flange portion.
38. The disc brake rotor and hub assembly (300) of claim 29 further including a wheel mounting flange portion (308) connectable with the rotor portion (306) and with the hub portion (304).
39. The disc brake rotor and hub assembly (300) of claim 29 wherein heat from the disc segment (340) of the rotor portion (306) is conducted from the disc segment to the sleeve segment (344) to the mounting segment (342) to the flange portion (308) and to the hub portion (304).
40. The disc brake rotor and hub assembly (300) of claim 29 further including the axle spindle (302) having a second bearing receiving surface (394) with an outer diameter (H2) substantially equal to the first outer diameter (H) of the bearing receiving surface (392).
41. The disc brake rotor and hub assembly (300) of claim 40 wherein the outer diameter (H2) of the second bearing receiving surface (394) and the first outer diameter (H) of the bearing receiving surface (392) are each in the range from about 3.475 inches to about 3.800 inches.
42. A disc brake rotor and hub assembly (100, 300) for a heavy-duty vehicle having an axle spindle (101, 302), the disc brake rotor and hub assembly comprising:
a hub portion (102, 304) receivable on and rotatable about the axle spindle (101, 302), the hub portion having a substantially cylindrical body (110, 310) and a mounting section (112, 312) integrally formed with the cylindrical body and extending radially outward from the cylindrical body;
a rotor portion (104, 306) including a disc segment (140, 340), a mounting segment (142, 342) and a substantially cylindrical sleeve segment (144, 344) connecting the disc segment to the mounting segment, wherein a smallest inner dimension (D2, E-ID) of the rotor portion is greater than a largest outer dimension (Dl, D6) of the hub portion defining a clearance passage (179, 382);
a cavity (398) at least partially defined by the cylindrical sleeve segment (144, 344) of the rotor portion (104, 306) and axle spindle (101, 302); 77 a flange portion (106, 308) having a main central section (172, 372) and a radially outward extending attachment section (174, 374), the main central section of the flange portion being connectible with the mounting section of the hub portion, the attachment section of the flange portion being connectible with the mounting segment of the rotor portion; and
a scallop formed in at least one of the mounting segment (112, 312) of the rotor portion (102, 304) and attachment section (174, 374) of the flange portion (106, 308) to define a radial passage (175, 396) therebetween;
wherein fluid may flow from the cavity (398) to the clearance passage (179, 382) and to the radial passage (175, 396).
43. The disc brake rotor and hub assembly (100, 300) of claim 42 further including an inboard disc (160, 360) and an outboard disc (162, 362) formed in the disc segment (140, 340) of the rotor portion (104, 306) and spaced apart and interconnected by a plurality of pins (164, 364) defining radially extending passages (165, 366), and further including surface means defining an axially extending passage (166, 368) formed at an interface of the outboard disc and sleeve segment (144, 344) of the rotor portion (104, 304), wherein fluid may flow from the axially extending passage to the radially extending passages.
44. The disc brake rotor and hub assembly (100, 300) of claim 42 further including a beginning segment of a radial passage in fluid communication with a clearance passage, the beginning segment of the radial passage having a piece located inboard of the attachment section (374) of the flange portion (308).
45. The disc brake rotor and hub assembly (300) of claim 42 further including a second radially extending passage (420) formed between the mounting section of the hub portion and the main central section of the flange portion; and
a second axially extending passage (422) formed between a radially outward surface of the hub portion and a radially inward surface of the flange portion;
wherein fluid may flow from the second axially extending passage to the second radially extending passage and to the radial passage.
46. A disc brake rotor and hub assembly (300) for a heavy-duty vehicle having an axle spindle (302), the disc brake rotor and hub assembly comprising: 78 a hub portion (304) receivable on and rotatable about the axle spindle (302), the hub portion having a substantially cylindrical body (310) and a mounting section (312) integrally formed with the body and extending radially outward from the body;
a rotor portion (306) including a disc segment (340), a mounting segment (342) and a substantially cylindrical sleeve segment (344) connecting the disc segment to the mounting segment, wherein a smallest inner dimension (E-ID) of the rotor portion is greater than a largest outer dimension (D6) of the hub portion defining a clearance passage (382) therebetween;
a cavity (398) at least partially defined by the cylindrical sleeve segment (344) of the rotor portion (306) and the axle spindle (302), the cavity being in fluid communication with the clearance passage (382); a flange portion (308) having a main central section (372) and a radially outward extending attachment section (374), the main central section of the flange portion being connectible with the mounting section (312) of the hub portion (304), the attachment section of the flange portion being connectible with the mounting segment (342) of the rotor portion (306);
a radially extending passage (420) formed between the mounting section (312) of the hub portion (304) and the main central section (372) of the flange portion (308); and
an axially extending passage (422) formed between a radially outward surface of the hub portion (304) and a radially inward surface of the flange portion (308);
wherein fluid may flow from the axially extending passage (422) to the radially extending passage (420) to the clearance passage (382) and to the cavity (398).
47. A disc brake rotor and hub assembly (300) for a heavy-duty vehicle having an axle spindle (302), the disc brake rotor and hub assembly comprising:
a hub portion (304) receivable on and rotatable about the axle spindle (302), the hub portion having a substantially cylindrical body (310) and a mounting section (312) integrally formed with the body and extending radially outward from the body;
a rotor portion (306) including a disc segment (340), a mounting segment (342) and a substantially cylindrical sleeve segment (344) connecting the disc segment to the mounting segment; 79 a flange portion (308) having a main central section (372) and a radially outward extending attachment section (374), the main central section of the flange portion being connectible with the mounting section (312) of the hub portion (304), the attachment section of the flange portion being connectible with the mounting segment (342) of the rotor portion (306);
a radially extending passage (420) formed between the mounting section (312) of the hub portion (304) and the main central section (372) of the flange portion (308); and
an axially extending passage (422) formed between a radially outward surface of the hub portion (304) and a radially inward surface of the flange portion (308);
wherein the axially extending passage (422) and the radially extending passage (420) define a space of noncontact between the flange portion (308) to the hub portion (306) to minimize heat conduction from the flange portion to the hub portion.
PCT/US2018/033858 2017-05-25 2018-05-22 Hub and rotor assembly WO2018217725A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BR112019024699-1A BR112019024699B1 (en) 2017-05-25 2018-05-22 HUB AND ROTOR ASSEMBLY
AU2018272826A AU2018272826B2 (en) 2017-05-25 2018-05-22 Hub and rotor assembly
CA3061977A CA3061977C (en) 2017-05-25 2018-05-22 Hub and rotor assembly

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201762510805P 2017-05-25 2017-05-25
US62/510,805 2017-05-25
US201862634237P 2018-02-23 2018-02-23
US62/634,237 2018-02-23

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WO2018217725A3 WO2018217725A3 (en) 2019-01-03
WO2018217725A4 true WO2018217725A4 (en) 2019-02-21

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US (1) US10851860B2 (en)
AU (1) AU2018272826B2 (en)
BR (1) BR112019024699B1 (en)
CA (1) CA3061977C (en)
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WO (1) WO2018217725A2 (en)

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Also Published As

Publication number Publication date
US10851860B2 (en) 2020-12-01
MX2023014810A (en) 2024-01-12
BR112019024699B1 (en) 2024-02-15
MX2023014808A (en) 2024-01-12
WO2018217725A2 (en) 2018-11-29
CA3061977C (en) 2021-08-10
US20180340584A1 (en) 2018-11-29
CA3061977A1 (en) 2018-11-29
AU2018272826A1 (en) 2019-11-14
AU2018272826B2 (en) 2021-01-28
BR112019024699A2 (en) 2020-06-09
WO2018217725A3 (en) 2019-01-03

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